Headstone information - Stockdale Cemetery

I am trying to research my grandmother's family. A cousin of hers was buried at Stockdale/Lick Creek Cemetery in the 1940's. There was originally a military type plaque marker placed on the grave. It appears that a larger headstone was placed there sometime later. Can anyone please tell me how I could go about finding out who might have ordered that headstone? It could have been ordered any time from the mid 1940's to , say the 1970's.

What businesses around there made headstones? Or is there any contact info for that cemetery? Thank you for any info that you might have?